<template>
  <div class="screenfull-svg" @click="click">
    <!-- <svg-icon :icon-class="isFullscreen?'exit-fullscreen':'fullscreen'" @click="click" class="screenfull-svg" /> -->
    <img src="@/assets/image/scrll.png" alt="" class="wid00 hei00">
  </div>
</template>

<script>
import screenfull from 'screenfull'

export default {
  name: 'Screenfull',
  data() {
    return {
      isFullscreen: false
    }
  },
  mounted() {
    this.init()
  },
  beforeDestroy() {
    this.destroy()
  },
  methods: {
    click() {
      //建议安装下载screenfull@5版本,@5版本以上会有错误
      //该组件下载版本是@4.2.0
      /**
       * 下载
       * npm install screenfull@4.2.0
       * 引入
       * import screenfull from 'screenfull'
       * 使用
       * <svg-icon :icon-class="isFullscreen?'exit-fullscreen':'fullscreen'" @click="click" class="screenfull-svg" />
       * 事件
       * if (!screenfull.enabled) {
         this.$message({
            message: 'you browser can not work',
            type: 'warning'
          })
          return false
         }
         screenfull.toggle()
       */
      if (!screenfull.enabled) {
        this.$message({
          message: '该设备不可以全屏',
          type: 'warning'
        })
        return false
      }
      screenfull.toggle()
    },
    change() {
      this.isFullscreen = screenfull.isFullscreen
    },
    init() {
      if (screenfull.enabled) {
        screenfull.on('change', this.change)
      }
    },
    destroy() {
      if (screenfull.enabled) {
        screenfull.off('change', this.change)
      }
    }
  }
}
</script>

<style scoped>
.screenfull-svg {
  display: inline-block;
  cursor: pointer;
  /* background: #0D9BFF; */
  width: 20px;
  height: 20px;
}
</style>